diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fa778cb..dce97f5 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,12 +17,12 @@ env:
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
-  misspell-check:
-    runs-on: ubuntu-latest
-    container: pouchcontainer/pouchlinter:v0.1.2
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
+#  misspell-check:
+#    runs-on: ubuntu-latest
+#    container: pouchcontainer/pouchlinter:v0.1.2
+#    steps:
+#      - name: Checkout
+#        uses: actions/checkout@v2
 
 #      - name: Lint markdown files
 #        run: find  ./ -name  "*.md" | xargs mdl -r ~MD010,~MD013,~MD022,~MD024,~MD029,~MD031,~MD032,~MD033,~MD034,~MD036
diff --git a/practise/image-practise/main.go b/practise/image-practise/main.go
index 5ca8212..27e7111 100644
--- a/practise/image-practise/main.go
+++ b/practise/image-practise/main.go
@@ -9,6 +9,11 @@ import (
 	"go-learning/practise/image-practise/image"
 )
 
+const (
+	defaultUser     = "pixiu"
+	defaultPassword = "123456"
+)
+
 var (
 	harbor          = flag.String("harbor", "harbor.cloud.pixiuio.com", "Choose a harbor to push (default harbor.cloud.pixiuio.com")
 	imageRepository = flag.String("image-repository", "pixiuio", "Choose a container registry to push (default pixiuio")
@@ -32,11 +37,20 @@ func main() {
 		klog.Fatal(err)
 	}
 
+	loginUser := *user
+	if len(loginUser) == 0 || loginUser == "--password" {
+		loginUser = defaultUser
+	}
+	loginPassword := *password
+	if len(loginPassword) == 0 {
+		loginPassword = defaultPassword
+	}
+
 	img := image.Image{
 		Harbor:          *harbor,
 		ImageRepository: *imageRepository,
-		User:            *user,
-		Password:        *password,
+		User:            loginUser,
+		Password:        loginPassword,
 		Cfg:             cfg,
 	}
 
diff --git a/practise/sftp-practise.go b/practise/sftp-practise.go
index e7deadf..3dde7ca 100644
--- a/practise/sftp-practise.go
+++ b/practise/sftp-practise.go
@@ -70,6 +70,12 @@ func CopyFromRemote(remoteFile, localFile, user, passwd, host string, port int)
 	}
 	defer srcFile.Close()
 
+	// 直接读到内存
+	//buf, err := io.ReadAll(srcFile)
+	//if err != nil {
+	//	return nil, err
+	//}
+
 	f, err := os.Create(localFile)
 	if err != nil {
 		return fmt.Errorf("create file %s failed %v", localFile, err)